Battery and associated assembly method

Abstract

The invention relates to a battery comprising at least two assemblies ( 16 ), each of the two assemblies ( 16 ) comprising a plurality of electrochemical cells ( 18 ) and a central plate ( 20 ), the electrochemical cells ( 18 ) of each of the two assemblies ( 16 ) comprising a first group ( 34 ) of electrochemical cells and a second group ( 36 ) of electrochemical cells which are separated from one another in the transverse direction (Y) by the central plate ( 20 ), Each of the assemblies ( 16 ) is able to move between a use configuration in which the first group ( 34 ) and the second group ( 36 ) of electrochemical cells are electrically connected to one another and a maintenance configuration in which the first group ( 34 ) and the second group ( 36 ) of electrochemical cells are electrically disconnected from one another, each of the first group ( 34 ) and of the second group ( 36 ) of electrochemical cells having a voltage of below 60 V.

1 - 14 . (canceled) 
     
     
         15 . A battery comprising at least two assemblies extending successively along a longitudinal direction,
 each of the two assemblies comprising a plurality of electrochemical cells extending successively along a transverse direction perpendicular to the longitudinal direction, and a central plate extending perpendicular to the transverse direction,   the electrochemical cells of each of the two assemblies comprising a first group of electrochemical cells electrically connected to each other and a second group of electrochemical cells electrically connected to each other, the first group and the second group being separated from each other, along the transverse direction, by the central plate,   the central plate of each of the two assemblies comprising a first face and a second face opposite each other along the longitudinal direction,   wherein each of the assemblies is movable between a use configuration wherein the first group of electrochemical cells and the second group of electrochemical cells are electrically connected to each other and a maintenance configuration wherein the first group of electrochemical cells and the second group of electrochemical cells are electrically disconnected from each other, each of the first group of electrochemical cells and the second group of electrochemical cells having a voltage of less than 60 V.   
     
     
         16 . The battery according to  claim 15 , wherein each of the assemblies comprises at least one connecting part removably fastened to the center plate, each of the first group of electrochemical cells and of the second group of electrochemical cells being electrically connected to the connecting part through a connection part, when the assembly is in the use configuration. 
     
     
         17 . The battery according to  claim 15 , wherein the first face of the central plate comprises at least one fastening pin, the second face of the central plate defining at least one fastening hole, the central plate of one of the two assemblies being in the longitudinal continuation of the central plate of the other of the two assemblies, the fastening pin of one of the two assemblies being inserted into the fastening hole of the other of the two assemblies. 
     
     
         18 . The battery according to  claim 17 , wherein the first face of the center plate comprises one second fastening pin and a second fastening hole and the second face of the center plate comprises the other second fastening pin and a second fastening hole. 
     
     
         19 . The battery according to  claim 17 , wherein at least one of the fastening holes of the center plate has an oblong shape. 
     
     
         20 . The battery according to  claim 15 , comprising at least one cross-member extending along the transverse direction, the cross-member being interposed longitudinally between the two assemblies along the longitudinal direction. 
     
     
         21 . The battery according to  claim 17 , comprising at least one cross-member extending along the transverse direction, the cross-member being interposed longitudinally between the two assemblies along the longitudinal direction. 
     
     
         22 . The battery according to  claim 21 , wherein the cross-member comprises at least one passage hole letting through the fastening pin of the corresponding central plate. 
     
     
         23 . The battery according to  claim 15 , wherein the central plate comprises a third face and a fourth face opposite each other along a third direction perpendicular to the longitudinal direction and to the transverse direction, the third face of the central plate delimiting, between one of the electrochemical cells of the first group of electrochemical cells and one of the electrochemical cells of the second group of electrochemical cells, a cavity located on the opposite the bottom. 
     
     
         24 . The battery according to  claim 23 , comprising electrical connectors fastened to the third face of the center plate in the cavity. 
     
     
         25 . The battery according to  claim 24 , wherein at least one of the electrical connectors is a busbar. 
     
     
         26 . The battery according to  claim 15 , wherein the central plate comprises an integrated cooling circuit defining at least one passage intended to let a cooling fluid flow therethrough. 
     
     
         27 . A method of assembling a battery according to  claim 15 , comprising at least the following steps:
 a step of assembling each of the two assemblies, and   a step of arranging the two assemblies so that the central plate of one of the two assemblies is in the longitudinal continuation of the central plate of the other of the two assemblies.   
     
     
         28 . The method according to  claim 27 , wherein the step of assembling each of the two assemblies comprises the removable fastening of a connecting part on the central plate and, for each of the groups, the fastening of a connection part on the connecting part. 
     
     
         29 . The method according to  claim 27 , wherein the central plate comprises a third face and a fourth face opposite each other along a third direction perpendicular to the longitudinal direction and to the transverse direction, the third face of the central plate delimiting, between one of the electrochemical cells of the first group of electrochemical cells and one of electrochemical cells the second group of electrochemical cells, a cavity located on the side opposite the bottom, the method comprising an additional step of fastening the electrical connectors onto the third face of the central plate in the cavity.